<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>hello world</title>
    <style>
        @keyframes scroll-left {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(100%);
  }
}
.scrolling-text {
  display: block;
  width: 100%;
  overflow: hidden;
  white-space: nowrap;
  animation: scroll-left 20s linear infinite;
}
    </style>
</head>
<body>
<iframe src="https://www.yuque.com/">

</iframe>
</body>
</html>